The 18-year-old Brazilian forward has made a huge impression since arriving as a relative unknown from Ituano last summer
Gabriel Martinelli became a leader at Arsenal during their bad start to the Premier League season, according to Bernd Leno.
The 18-year-old Brazilian was one of the few positives for the Gunners during the final months of Unai Emery’s troubled reign, after joining for just £6 million ($8m) from Ituano last year.
Leno says he has no doubt Martinelli can become a top player, and has been impressed with his mentality and hard-working nature.
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“I think he can become a world-class player,” Leno told Soccer AM.